CSCBF0 pages

Continuous Backflush Screen Changer (CSC/BF)
“All PSI products and components are proudly designed and manufactured in the USA.”

Features Include
•t Guaranteed leak-free operation to 10,000 psi
•t Breaker plate open area largest in the industry
•t All parts manufactured to ISO-9002 standards
•t No seals or contact parts
•t Rugged design provides resilience to wear
•t Continuous operation means no shut down
•t Process temperatures to 650° F
The Continuous Backflush Screen Changer (CSC/BF) performs much like
the Continuous Screen Changer (CSC) design. Polymer is divided into
eight streams, all being filtered in the top and bottom piston. Unlike the
CSC design, the backflush unit has two filtration cavities in each piston,
allowing for twice the filtration of the comparable sized CSC design. The
most unique aspect of the backflush CSC/BF is the capability of
“recycling” or “maximizing screen life” while in the melt flow. When
upstream pressure rises due to a high contaminant level, the PLC control
automatically actuates each piston to its backflush position, allowing
pressure to push contaminants off the dirty screenpack. Contaminants
are purged out of ports in the bottom of the housing into a drip pan.
Once the backflush sequence takes place, the “recycled” screens are
returned to the home position until the sequence takes place again. The
number of backflush sequences varies from process to process before a
screen change is required; however increased screen life of 25 times or

Benefits
Screen life increased as many as 25 times or more
Increased output due to lower backpressure
Design allows for screen changes without interrupting
material flow
Eliminates line shutdown thus increasing production
Absence of wear surfaces allows us to provide a five year
warranty against melt leaks
No maintenance or seals to replace
Easier access and less interference for the operator
Quick delivery time and return on investment

more is common.

Applications
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Recycling of most polymers
Sheet
Coating
Pipe and profile
Compounding

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Wire and cable
Tubing
Textiles (fibers and nonwovens)
EVA, hot melt adhesive and PSA
Pelletizing (strand and underwater)

•t Highly contaminated polymers
•t Blown film and cast film
•t Degradable materials

1703 Pineview Street SE in Conover, NC 28613
Ph: 828.468.2600 • Fx: 828.468.2610
sales@psi-polymersystems.com
www.psi-polymersystems.com